ELITE DEFENSIVE TRAINING. The Rookie is the most capable defensive training machine and it is used by every Major League club during spring training. It has the unique ability to rotate (360* horizontally/120* vertically) while in use, allowing the user to challenge multiple fielders, playing different positions, one after another. The Rookie allows every defensive drill to be practiced at a high volume and frequency-giving players more real game repetitions in a 2-hour practice than most see in an entire preseason.